Tandem-spring draft-rigging.



J. P. OGONNOR.

TANDBM. SPRING DBAFTRIGGING.'

APPLICATION FILED APR. 1er, 1910.

msw., Patented Feb. 1o, 19m

3 SHEETS-SHEET l.

INVENTOR W1 TNESSES @uw UWG@ ck A T'IURNE Y J. VP. OCGNNOR.

TANDEM SPRING DRAFT RIGGING. APPLIGATION FILED APR. 1a, 1910.

'm Patented Feb.1o,1914.

3 SHEETS-SHEET 2.

WI TNESSES e l l IN VEN TOR @Mm 6M y M @ifi/w? Y mi @ML/ 17 I 277g( ATTORNEY J. P. OCONNOR.

TANDEM SPRNG DRAFT RIGGING.

APPLICATION FILED Ande, 1910.

LS. Patented Feb. 10, 1914.

3 SHEETS-SHEET 3.

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JOHN F.. OCNNOR, l? CHICAGO, `ILLlDlOIS, ASSIGNOR 'lO WLLIM '.E-I. DEINER, @.IF

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application area .epm ie, 191e. serial ne. 555,780.

.l o (lll lwhom, it may concern lie it known that l, JOHN F. UCONNOR, a citizen of the United States, residing in Chicago7 in the county of Cook and State of illinois, have invented anew and useful lmprovement in Tandenrspring Draft-Rigging, of which the following isa specifica tion.

.ll/ly invention relates to improvements in tandem spring draft rigging for railway cars.

My invention 'consists in the novel con struction of parts and devices and in the novel combinations of parts and dcvioes herein shown and described and more particularly specified in the claims.

lin the accompanying ldrawing forming a part of this specification, Figure 1 is a plan view, partly in horizontal section of a tandem spring draft rigging; embodying my invention. Fig. 2 is a side elevation ofone side plate. Figs. 3 and l are vertical cross 'sections on lines 3-3 and 4:-4 respectively, of Fig. l. Fig. 5 is an enlarged detail perspective View showing one half of one of the side plates or stop castings which are secured to the center sills or other draft members of the car frame and against which the followers abut. Figs. 6 .and 7 are detail cross sections on lines 6 6 and 7-7 respectively of Fig. 5. Fig. 8 is a detail perspective view of the vertical thimble andlligs. 9 and 10 are detail plan views illustrating the operation of the vertical thimble, fol- Ylpwers and springs in centering the drawin the drawing l', 1 represent thecenter sillsor other frame members of a car to which the draft rigging, side plates or stop castings are secured; EZ the end sill; 3 the draw-bar; 4 the draft yoke; 5, 6, 7, 8 the followers; 9, l0 tandem arranged springs, each preferably having a smaller; spring 9a, 10 nested wit-hin it; 11 the vertical thimble or abutment block secured to the draft yoke at its middle portion and fitting between the t-wo intermediate followers 6. 7 l2 the side plates or stop castings secured to the draft sills and against which the followers abut;

and 13, i3, the carriers or tie plates remov ably secured to the stop castings i2 by short bolts lli.

The draft yoke i has on its upper and lower members or arms, gibs engagingr corresponding shoulders 16 on the draw-bar Specification offLett'ers Patent.

lltatented which coperate with the rivets 1.7 in set-uiv ingI the draft yoke to the draw-bar.

The vertical thimble or abutment block ll is made of a hollow7 rectangular box shape, as will be readily understood from Figs. lf and 8 of the drawing-7 and it is provided'at its upper and lower ends with `parallel vertical shoulders or flanges 1h to receive the upper and lower limbs` or members'of the draft yoke, which thus serve to relieve the rivets if) from any prying or shearing strain when the draw-bar and draft yoke swingl from side to side. The vertical thimble ll is provided with convexly curved upright faces l1a for engagement wiih the adjacent upright faces or edges of the side plates or stop castings 1&2 to permit the draw-bai' and draft yoke to swing; laterally `or from side to side as required when the cars are rounding curves, the vertical thimble thus serving in the nature of a fulcrum or pivot for the draw-bar and draft yoke in swinging from side to side.` The vertical thimble is also provided with wide or laterally exteinlinp,` flat faces 2() for engagement with the intermediate followers (3. and thus enable the tandemsprings 9, l0, in cooperation with the vertical thimble and followers, to automatically center the draw-bar or restore it to position after it hasbeen swung to one Side about the vertical thimblc as a fulcrlun or pivot. This centering function of the vertical thimble 11, in connection with the followers 6, 7 and tandem springs 9, l() will be `readily understood from Figs. 9 and l0 of the drawing, `the `former shon'ningl the draft yoke and draw-bar centered, and the latter showing the same swung to one side and the springs undermtension to center the drawbar or restore it to its central position through the action of the laterally extended upright flat faces of the thimble il which engage the followers 6 and 'Z' at diagonally opposite corners.

As the vertical thimble 1l is of a `hollow rectangular form or construction, the rivets 19 which vsecure the same to the upper and lower limbs ofl the draft voke maybe and are short rivets instead oi xsingle long, rivets, heretofore .customarily employed, each of which extends entirely through the vertical thimble as woll as through the upper and lower limbs of the draftyoke. rllhis im prove hollow box shaped construction of the vertical thimblenot only materially Sli lli)

El. dit

, transversely sunken portions 26 and 26a and lcreases the shearing strength of the rivets,

and the parallel shoulders 18, 18 which embrace the draft yoke on each side also cooperate to relieve the rivets from shearing strain when the draw-bar is swung forcibly to one side.

vThe side plates. or stop castings 12 are of,V

malleable iron and each comprises a main upright web 21 and four horizontal websl 22, 23, 24 and 25, the main Vupright web having projecting or raisedportions27and 27;? and a longitudinally sunken back portion 28 flush with the edges of the upper and lower horizontal webs or ianges 22 and 25 to fit against the center' sill or draft member 1. The transversely sunken portions 26--26a and projecting portions 27-27a of the main or upright web 21 are connected by upright transverse webs `or shoulders 29--29, 304,051 :a1-e1, a232a, :a3-33a, aawae, 35i-.35, and {5G-36a constituting the front, rear and intermediate main and limiting stops for the followers to abut against, the upright sunken portions 26T-26y forming 'the guiding surfaces for the ends of the followers. The main upright web 21 of each of thel side plates or stop castings l2 also has at each end inclinedportions 38 and 38 to further brace and stiifen the front and Each of the side plates or stop castings 12 is also provided with upright transverse connecting or bridge webs 39 extending across the longitudinal central channel 40 formed by the two intermediate horizontal webs 23, 24,l and such channel in a measure separates or divides the stop casting as a whole into upper and lower members, the upper member consisting ofthe two uppermost horizontal webs 22, 23 andthe sunken and projecting ortions 26, 27 of the up,- right web with tieir connecting stop shoulders, and the lower member comprising the two lowermost horizontal webs 24, 25, and the sunken portions 26*1 and projecting portions 27'a of the main upright web 21. The construction of the malleable iron side casting 12 thus, with the .central longitudinaldividing channel 40 between its upper and lower members in connection with then right transverse bridgey or 'connecting we s 39 between the upper and lower membersof the integral casting materially reduces the amount or weight of metal required,.and

also at the same time greatly increases the strength, efhciency and reliability -of the stop casting to withstand the heavy blows to which itis subjected through the followers. The upper and lower horizontal webs 22 and 25 are connected at their ends by'a shallow, transverse upright rib 41 into which the horizontal webs 22 and 25 merge by a gradual taper 42. The central, longitudinal channel 40 formed by the intermediate horizontal webs 23, 24 and back portion-28 of the main upright web 21 is provided with -a series of 'rivet holes through which the short rivets 43 are inserted, by

vwhich each of the stop castings 12 is secured to its center sill 1. The rivets 43 are thus all, excepting a pair at each end, located in the central longitudinal line of the stop cast# ing, which is a matter of convenience and economy in drilling the rivet holes and applying the 'stop castings to the car sills, and

also brings the rivets in the central, horizontal plane cf the draw-bar thrust, thus adding to the effective strength. Each of the side plates or stop castings 12 is also provided with depending arms or projections 44 having slots or sockets 45 to receive the short bolts 14, and shoulders 46 to engage the heads 4'4". of said bolts by which the carrier straps or tieplates 13 are secured to the stop castings 12. T he carrier straps 13 are provided with flanges or shoulders 48 to engage the outer faces of the arms 44 and thus cause the carrier straps to serve also as tieplates to bind or tie togetherthe two 'stop castings 12 .and the center sills to which thc stop castings are secured. The lower limb or member of the draft yoke 4 rests directly upon the carriers 13, thus supporting the. draft rigging from the stop castings' 12 through the carriers 13 which are rcmovably secured to the stop castings. This enables the draft rigging to be readily removed and replaced.'

My improved form of stop casting 12 not only results in a material reduction in amount of metal required and cost, but it is `also specially adapted to be readily molded and cast, no cores whatever being required.

' I, claim 1. In a tandem spring draft rigging, a draft yoke having a hollow, yupright thimble secured to the draft yoke by short rivets extending throughlthe upper and lower limbs of the draft yoke and through the upper and lower horizontal walls of the hollow thimble, said thimble having shoulfders on its upper and lower faces to embrace the upper and lower limbs of the draft yoke, 'substantially as specified.

2. In a tandem spring draft rigging, the

conlbination with a draw-bar, draft yoke,

tandem arranged springs and followers, of stop castmgs having front, rear, intermeremates diate and-limiting stops for the followers to abut against, and each comprising .a main upright web and four. horizontal webs, the main upright web having alternate sunken and raised portions to form the stop shoulders, and the two intermediate horizontal webs separating the integral stop casting into upper and lower members with a central, longitudinal channel between, substantially as speciied.

3. lin a tandem' spring draft rigging, the

. combination with a'draw-bar, draft yoke,

tandem arranged springs and followers, of stop castings having front, rear, intermediate and limiting stops for the followers to abut against, and each Comprising a main uprightweb and tour horizontal webs, the, main upright web having alternate sunken and raised ortions to form the stop Ashoulders,I and t e two intermediate horizontal webs separating. the integral stop casting into upper and lower members with a central, longitudinal channel between, and upright transverse bridge webs connecting said upper and lower members, substantially as specied d. ln a tandem spring draft rigginga web and four horizontal longitudinal Webs, the two intermediatdwebs forming a centrai longitudinal channel, said longitudinal channel dividing the integral stop casting into upper and lower members, said upper and lower members each having alternate depressed and projecting portions to form stop casting consisting of a main upright depressed and projecting portions to form si the stopshoulders, said stop casting having upright transverse bridge Webs extending across `said'longitudinal channel, substantially as specified.

JOHN F. OCONNOR. `lllf'itnesses:

PEARL ABRAMS, EDMUND ADCooK.

v @oplet elitista l :i may be obtained for ve cents each, by addressing the Gommlxloner j.' detenta A Washlngton,D.C. 

